John c



uiten vtatie-n lidstaat ffice.

Laim Para: No. 76,343, @zaad Awa v, 186s IMPROVEMENT IN ROTARY' GUTTERS FOR' PLOUGHS.

tite tlgemle antan tu in tigen Eaterstten mit mating ont tf tige time.

`TO ALL WHOM IT MAY CONClR'N Be it known that I, JOHN .0. PFEXL, of-Argenzville, in the county of' Cass, and State of Illinois, have invented' new and'useful Improvements in Rotary Cutters for Ploughs; and I do hereby declarekthat the following is a full, clear, and exact description of 4my invention, reference being had to the accompanying drawings, and to the' let-ters of reference marked thereon, of whichdrawingsi Figure 1 is a yside view of my improved rotary cutter. Figure 2 is an end view ofthe same. Figures 3 are sectional views of the casterspindle and collar, and Figure 4 is a pla-n of caster-joints, showing the arrangement of pin. The nature of my invention .consists in providing the arm which carries the cutter withv a swivel or casterjoint, also in the. peculiar arrangement of slots in the cutter-arm, in such a manner as to allow of the rot-ary 'cutter being raised or-lowered at pleasure, by which improvements I greatly increase the utility of this species of cutter, especially when used in connection with gang or sulky-ploughs, where an 'ordinary straight cutter, or arotary cutter which has no horizontal motion, is found very objectionable. i

I To enable otherssklled in the artto make and use my invention, I will proceed to' describe its construction and operation. l I

G is theplough-beam, ofthe common form, A is the cutter-arm, and E is the rotary cutter. The cutterarm A is flat at its upper part, and has the slots, L L', therein, lthrough which pass the'bolts 'I-I H, one above and the other below the plough-beam G, thence through the plate-iron K, on theother side of said beam, Where they are secured by nuts 'J J, as shown. It is readily seen .that when lthe nuts .I .I are screwed up tight, the plates K and cutter-arm A will be firmly' secured to the beam, and also, that by loosening the nuts J J, the arm A may be raised or low'ered, as desired, the bolts H II sliding up or down in the slots L L. On the lower, part of the arm A `is arrangedY the tapering spindle B, as shou'n, which passes through a corresponding tapering hole, B, in the collar M, to which are secured the 4arms D D, which guide the cutter E. A bolt,F, passes'through the arms D D and the cutterE, and is secured bythe nut b, thus serving as the axis for said cutter. A pin, C, of the form shown, or any other suitable form, is arranged in a hole, a, n the lowerend of the spindleB, and .extends out beyond the collar M, thus serving,l at the same time to prevent the collar M from coming off the spindle B, and to prevent the'cutter from turning around too far, so as to'vget the arms'D D in a direction opposite from their correctV position,'shown in drnwingm'as, when the cutter has turned around the spindle B a suiiicient distance, the arms D strike the pin C, and any further rotation in that direction is prevented. This arrangementis fuily shown in Iig. 4.

The tapering spindle B, used in connection withthe tapering hole B, in the-collar M, insures a. good-fitting vjoint; at all times, for as the holeB wears out, the top of the collar M wears oil', and'allows thecollar Mto move .up on the spindle B, and thus any looseness .of the joint isprevented.

With the cutter'thus arrangedt can be made to cut to agreater or less depth, andthe plough can be lifted up out ofthe ground, or turned in any direction, without cramping the cutter or getting it Wrong-side foremost, which isvery objectionable, as, when the cutter is turned in the wrong direction,and the plough drawn ahead, the cutterwillturn around, 'and in this turningr isvery liable to be broken.

Having thus vfully described my improved cutter, I; wish' it'understood that I do not claim as myinvention the principle of making acutter capable ot' adjustment to a greater on less cut, nor the use ofthe rotary wheelcutter, nor` the principle 4of giving the cutter a horizontal or caster motion, as all these ideas have beenbe'fore shown; but` l What I do claim as my invention, and desire to secure by Letters Patent, is-

l'. The peculiar arrangement and combination ofthe spindle B on cutter-arm A, and collar M with hole B therein, for the purpose of forming a caster-joint for cutter E, substantially in the manner and for the purpose herein specified.v

2 The SlOS L L l ille-Cutter-arm A, Whether said arm be for a-rtarypr anyother kind of cutter, Where said slots are ns'ed `to allow of `fertical adjustments of said cutter, substantially in the manner and for-the purpose herein specilied.

3. The piu Cywhen said pin serves both to secure the collar M on the spindle A, and tolimt tho rotary or caster motion ofthe ca igter E, in the manner a/nd for the purpose herein specified.

AS evidence that I claim the foregoing,'I have hereunto set my hzind irl presence of two witnesses.

JOHN Cl PFEIL.

Witneses: n

THos. H. GLEESON, F. G. FARRELL. 

